Pencil



@et 18, 1932. s. KRUTT PENCIL original Filed June 25. 1927 IN V EN TOR ATTORNEY Patented Oct. 18, 1932 UNITED STATES PATENT OFFICE i IsEAEI. xEU'r'r, oF NEW YoEx, N. Y., .assIGNcI-t,l EY DIEEc'r AND MEsNE ASSIGNMENTS,

E EIvE PEE CENT 'ro WILLIAM A. EAPI'EPOE'I, or NEW YoEx, vN. Y., EoE'rY- SEVEN AND ONE-HALE EEE CENT 'ro JAMES J. DEEGAN AND EoE'rY-sEvEN AND oNE- HALF PER CENT TO JEAN U. KOREE IENCII.

Application nea :une 25, 1e21,`seria1Ne. 201,295. Renewed yMaren as, 1931.

This invention relates to pencils and particularly to pocket carried pencils of the r magazine' type in which a plurality of leads 4 are delivered sin ly to an axial passage when the preceding lea has become used, and thereafter moved into operative position by manipulation of the casmg or body of the pencil. Pencils of this type,` while extensively in use, are notoriously subject to disorder, due

largely to faulty mechanical design, weakness of parts and inferiority of workmanship amounting to crudity of construction.

It is therefore an important object of this t invention to provide a pencil of thetypedescribed, that is subs'tantially free from the mentioned disadvantages by reason of its superior design, simplicity, strength of parts, avoidance of unnecessary weight and 1n the general practical arrangement of the structure.l

A further feature is in the provision of a magazine pencil havin a simple means for positively projecting t e lead step by step outward y as it becomes worn and without soiling the fingers, an unused section oflead beingautomatically supplied from 4the magazine whenever required.

These and other advantageous objects are attained by the novel construction and arrangement of a few simple parts as hereinafter described and shown in the accompanying drawing, forming a material part of' this disclosure, and in which Figure 1 is a longltudinal sectional view vention, the parts being shown in normal carrying position. o

vFi ure 2 is a similarl view of the same but showin the parts as in the position assumed in' expe ing a portion of the lead.

Figures 3, 4 and 5 are transverse sectional views taken respectively on lines 3 -3, `1---4 and 5 5 of Figure 1.

Figure 6 is a perspective view of the cylindrical lead guiding element. Y

Figure 7 is a similar view, partially in section of the lead engaging jaws, controlled by the guide element.

Figure 8 is a similar view of the slidable 90 5 annulus. l

of a pencil made in accordance with the in- The outer casing 10 of the pencil barrel may be made of metal, hard rubber, synthetic phenolic rosin, Celluloid or other equivalent substances, the same being cylindrical with a plain or ornamental exterior las desired.

. At the upper end is a metallic band 11 on which is slidably engaged the cylindrical walls of a cap`12 further on descrlbed.

A spring clip 13 carries an engaging clamp 14 at one end, the clip being bent and offset at the other end to engage tHe casing v 10 below the band 11, its terminal 15 extending at a right angle through the casing 10, and is rigidly fixed in a metallic lining 16, the termlnal being extended through a slot in a tube 17. v l

The tube 17 is expanded at its upper end to yform a cup 18making contact with a shouldered abutment within the cap 12 and carried within the expanded chamber in the vcup 18 is an eraser 19 to extend slightly therebeyond A within the cap 12 nearly to its closed outer end, the same beingaccessible upon removal of the cap.

An operatlvely positioned marking lead .20 is shown axially within the barrel surrounded at its upper portion by reserve leads 20'; the lower extending end of the lead 2O reaches outwardly through a tight fitting orifice in the .split conicaltip 21 of a solid guide 22 having an inreaching screw threaded stem 23 and provided with a bore 24 slightly in excess of the diameter of the leads. An outer conical metallic casin 25 is vseated on a shouldered portion of t e solid Aguide 22, its enlarged base portion extending upwardly to partially overlie the lower bev- 'elled edge ofthe barrel casing 10, forming a close -joint therewith.

'Within the casing 25is theconical end 26 of the lining 16 which extends at its upper end to a position above'the band 11 within the confines of the removable cap 12.

Adjustably engaged b the threaded stem 23 is a conical sleeve 27, lling the lining element 26 for a portion of its length and engaging the down-reaching threaded stem 28 of a cylinder 29 loosely surrounding the lead .Slidable overl the cylinder v29a is a thin cylindrical band 30 formed on the lower end of an annulus 31 the central porti-on 32 of which is enlarged in diameter to slidably engage .the interior of the lining 16.

Interposed between the lower shoulder of the annulus 31 and the upper end of the sleeve 27 is a coiled compression spring 33, encircling the band 30 and cylinder 29, to exert pressure on the annulus in a direction away from the point of the pencil.

Normally seated on a shoulder within the annulus 31 and wholly contained therein are a pair of jaws 34, recessed in their main portion to clear the lead 2Q which passes centrally therebetween and which present 'downwardly extending elements 35 bevelled on their outer surfaces to engage within a conically bored portion of the annulus 31, these jaws being adapted to grip the lead 20 when pressed towards each other due to contact of their bevelled surfaces within the conical bore.

The opposed upper ends of the jaws 34 contain etween them a slightly tapered recess 36 in which is loosely received the upper element 39 of the cylinder 29, the same being integrally connected by a pair of arms 38, which pass freely between the jaws.

Engageable in the tapered recesses 36 of the jaw elements is a sleeve 37 extending downwardly from a cylindrical slide 48 having an enlarged band 49 freely fitting the space Within the lining 16 and abutting the reduced upper end of the annulus 31.

l The upwardly continuing portion of the slide 48, above the band 49, isreduced in diameter and securely united to the lower end of the tube 17, which, as previously noted, extends into the capA 12 to be actuated by it.

The upper end of the slide 48 presents a concave face 40 to receive a supply of leads 20', the same being entered by removing the cap and eraser 19, disclosing an unobstructed chamber 41 within the tube 17, the leads resting normally on the face 40 and urged towards the center, by reason of its shape, to eventually ass through the axial opening 42 in the sllde 48, a chamber 43 therein and thence through theI element 39,' jaws 34, a

space 44 normally between the lower ends of the jaws and guide cylinder 29, and through the cylinder and conical guide 22 to the point 21, as clearly shown in Figures 1 and 2.

The operation of feeding the lead is accomplished by pressing upon the cap 12, causing the cup 18 and its tube 17, together with the slide 48, to move towards the point, compressing the spring 33.

Movement of the slide 48 downwardly transmits corresponding movement to the annulus 31-32, Whichis heldin Contact with it by the spring and as the interior cone at 31 is engaged over the elements 35 of the jaws, tending to press them towards each other, a biting grip on thelead occurs so that the lead is positively moved towards and through the point of the pencil.

Movement of the jaws however is arrested by making contact with the inner end of the fixed guide cylinder 29, the space 44 being thus closed and the length of this space determining the distance the lead is moved.

Continued pressure on the cap 12 moves the slide 48 still further towards, the point causing the thin cone 37 .to engage the conical recess 36 between the jaws 34-35 and, acting in the manner of a wedge, forcing them apart, releasing the lead, this downward action being limited by the length of the chamber 43.

As the jaws and slide remain in clutched relation the aws are held apart, free of the lead, until stopped by Contact with vthe lower end of the guide cylinder element 39 and then, the slide 49 continuing to rise, causes the jaws to again grip the vlead by action of the cone in the element 31 overtaking and closing the jaws; obviously when pressure on the cap is released, the spring 33 returns the parts to the position shown in Figure 1.

Due to the pressure of the jaws upon the lead if it is desired to retract the lead it can best be done by applying pressure upon the cap and the extending portion of the lead towards each other coincidently.

As changes in construction could be made within the scope of the invention, it is intended that all matter contained in the foregoing description or shown in the accompanying drawing shall be interpreted as 1llustrative and not in a limiting sense.

Having thus described my invention, what l claim as new and desire to secure by Letters Patent is 1. A pencil comprising a barrel having a tip at one end and a cap at theother, a tube attached to said cap and slidable in said barrel by movement of said cap, a pair of opposed ioating lead-gripping jaws movable towards said tip by the tube', means to cause thejaws to grip the lead resilient means -opposed -to the tube, a stop limiting the movement of the jaws, and means to positively relax the-gripping jaws when at their lowermost positionn 2. In a mechanical lead pencil the combination with a reciprocating tube of a pair of ioating jaws, means to move the jaws parallelly towards each other for clamping the jaws against the lead to restrain it against retraction and also to propel it, and means serving toparallelly separate the jaws and to carry them back free of the lead.

3. In a magazine pencil having a barrel and a reciprocating tube therein, and a slide,

vthe combination of a floating sleeve, a pair of opposed floating lead-gripping slidable jaws within said lioating sleeve, lstops for limiting the longitudinal movement of the jaws in each direction, means on the ioating sleeve for forcing the jaws toward each other lto grip the lead at one end of their longitu-` dinal movement and means on the slide for separating the jaws at the other end of their longitudinal movement, to release the lead.

Signed at New York, in the county of New York and State of New York this 24th day of May, 1927. ISRAEL KRUTT. 

